select Date,TotalAllowance 
from Calculation 
where EmployeeId=1
  and convert(varchar(10),Date,111) between '2011/02/25' and '2011/02/27'

例子:工作和非工作。

select * from tblUser Where    
convert(varchar(10),CreatedDate,111) between '2015/04/01' and '2016/04/01' //--**Working**

OR

select * from tblUser Where
(CAST(CreatedDate AS DATETIME) between CAST('2015/04/01' AS DATETIME) And CAST('2016/4/30'AS DATETIME)) //--**Working**

OR

select * from tblUser Where
(YEAR(CreatedDate) between YEAR('2015/04/01') And YEAR('2016/4/30')) 
//--**Working**

下面的AND是无效的:

select * from tblUser Where
Convert(Varchar(10),CreatedDate,111) >=  Convert(Varchar(10),'01-01-2015',111) and  Convert(Varchar(10),CreatedDate,111) <= Convert(Varchar(10),'31-12-2015',111) //--**Not Working**


select * from tblUser Where
(Convert(Varchar(10),CreatedDate,111) between Convert(Varchar(10),'01-01-2015',111) And Convert(Varchar(10),'31-12-2015',111)) //--**Not Working**

Select 
    * 
from 
    Calculation 
where 
    EmployeeId=1 and Date between #2011/02/25# and #2011/02/27#;

试着把日期放在# #之间 例如:

#2013/4/4# and #2013/4/20#

这对我很管用。

SELECT Date, TotalAllowance  
FROM Calculation  
WHERE EmployeeId = 1 
  AND Date BETWEEN to_date('2011/02/25','yyyy-mm-dd') 
               AND to_date ('2011/02/27','yyyy-mm-dd');

select * from table_name where col_Date between '2011/02/25' 
AND DATEADD(s,-1,DATEADD(d,1,'2011/02/27'))

这里，首先向当前的endDate添加一天，它将是2011-02-28 00:00:00，然后减去一秒，使结束日期为2011-02-27 23:59:59。通过这样做，您可以获得给定间隔之间的所有日期。

output:
2011/02/25
2011/02/26
2011/02/27